Walking the dog, about 10 last night. Got a werid feeling. Couldn't place it for a few minutes, then realized, no road noise, no aircraft (I'm under the approach to 2 small commercial airports, and can often hear and see aircraft from Newark and Philadelphia up high). The only aircraft I've noticed have been military ( McGuire AFB / Lakehurst Naval Air about 10 miles away). Shades of the weeks after 9/11. Not a pleasant feeling.